axbinaryreader.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#ifndef INCLUDED_OOX_OLE_AXBINARYREADER_HXX
#define INCLUDED_OOX_OLE_AXBINARYREADER_HXX
 
#include <cstddef>
#include <utility>
#include <vector>
 
#include <oox/helper/binaryinputstream.hxx>
#include <oox/helper/binarystreambase.hxx>
#include <oox/helper/refvector.hxx>
#include <rtl/ustring.hxx>
#include <sal/types.h>
 
namespace oox::ole { struct AxFontData; }
 
namespace oox::ole {
 
 
class AxAlignedInputStream final : public BinaryInputStream
{
public:
    explicit            AxAlignedInputStream( BinaryInputStream& rInStrm );
 
    virtual sal_Int64   size() const override;
    virtual sal_Int64   tell() const override;
    virtual void        seek( sal_Int64 nPos ) override;
    virtual void        close() override;
 
    virtual sal_Int32   readData( StreamDataSequence& orData, sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
    virtual sal_Int32   readMemory( void* opMem, sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
    virtual void        skip( sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
 
    void                align( size_t nSize );
 
    template< typename Type >
    [[nodiscard]]
    Type                readAligned() { align( sizeof( Type ) ); return readValue< Type >(); }
    template< typename Type >
    void                skipAligned() { align( sizeof( Type ) ); skip( sizeof( Type ) ); }
 
private:
    BinaryInputStream*  mpInStrm;           
    sal_Int64           mnStrmPos;          
    sal_Int64           mnStrmSize;         
};
 
 
typedef ::std::pair< sal_Int32, sal_Int32 > AxPairData;
 
typedef ::std::vector< OUString > AxArrayString;
 
 
class AxBinaryPropertyReader
{
public:
    explicit            AxBinaryPropertyReader( BinaryInputStream& rInStrm, bool b64BitPropFlags = false );
 
    template< typename StreamType, typename DataType >
    void                readIntProperty( DataType& ornValue )
                            { if( startNextProperty() ) ornValue = maInStrm.readAligned< StreamType >(); }
    void                readBoolProperty( bool& orbValue, bool bReverse = false );
    void                readPairProperty( AxPairData& orPairData );
    void                readStringProperty( OUString& orValue );
    void                readArrayStringProperty( std::vector< OUString >& rStrings );
    void                readGuidProperty( OUString& orGuid );
    void                readFontProperty( AxFontData& orFontData );
    void                readPictureProperty( StreamDataSequence& orPicData );
 
    template< typename StreamType >
    void                skipIntProperty() { if( startNextProperty() ) maInStrm.skipAligned< StreamType >(); }
    void                skipBoolProperty() { (void)startNextProperty(); }
    void                skipStringProperty() { readStringProperty( maDummyString ); }
    void                skipArrayStringProperty() { readArrayStringProperty( maDummyArrayString ); }
    void                skipGuidProperty() { readGuidProperty( maDummyString ); }
    void                skipPictureProperty() { readPictureProperty( maDummyPicData ); }
    void                skipUndefinedProperty() { ensureValid( !startNextProperty() ); }
 
    bool                finalizeImport();
 
private:
    bool                ensureValid( bool bCondition = true );
    bool                startNextProperty();
 
private:
    struct ComplexProperty
    {
        virtual             ~ComplexProperty();
        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) = 0;
    };
 
    struct PairProperty final : public ComplexProperty
    {
        AxPairData&         mrPairData;
 
        explicit            PairProperty( AxPairData& rPairData ) :
                                mrPairData( rPairData ) {}
        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) override;
    };
 
    struct StringProperty final : public ComplexProperty
    {
        OUString&    mrValue;
        sal_uInt32          mnSize;
 
        explicit            StringProperty( OUString& rValue, sal_uInt32 nSize ) :
                                mrValue( rValue ), mnSize( nSize ) {}
        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) override;
    };
 
    struct ArrayStringProperty final : public ComplexProperty
    {
        AxArrayString&      mrArray;
        sal_uInt32          mnSize;
        explicit            ArrayStringProperty( AxArrayString& rArray, sal_uInt32 nSize ) :
                                mrArray( rArray ), mnSize( nSize ) {}
        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) override;
    };
 
    struct GuidProperty final : public ComplexProperty
    {
        OUString&    mrGuid;
 
        explicit            GuidProperty( OUString& rGuid ) :
                                mrGuid( rGuid ) {}
        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) override;
    };
 
    struct FontProperty final : public ComplexProperty
    {
        AxFontData&         mrFontData;
 
        explicit            FontProperty( AxFontData& rFontData ) :
                                mrFontData( rFontData ) {}
        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) override;
    };
 
    struct PictureProperty final : public ComplexProperty
    {
        StreamDataSequence& mrPicData;
 
        explicit            PictureProperty( StreamDataSequence& rPicData ) :
                                mrPicData( rPicData ) {}
        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) override;
    };
 
    typedef RefVector< ComplexProperty > ComplexPropVector;
 
private:
    AxAlignedInputStream maInStrm;          
    ComplexPropVector   maLargeProps;       
    ComplexPropVector   maStreamProps;      
    StreamDataSequence  maDummyPicData;     
    OUString            maDummyString;      
    AxArrayString       maDummyArrayString; 
    sal_Int64           mnPropFlags;        
    sal_Int64           mnNextProp;         
    sal_Int64           mnPropsEnd;         
    bool                mbValid;            
};
 
 
} // namespace oox::ole
 
#endif
 
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